Recently, topological flat bands have been the subject of intense research in twisted bilayer graphene [1]}, [2]} as well as other two-dimensional systems including the Lieb, honeycomb and kagome lattices [3]}, [4]}, [5]}, [6]}, [7]}, [8]}, [9]}, [10]}, [11]}. There are also topological flat bands in rhombohedral multilayer graphene (RMG) [12]}, [13]}, [14]}, [15]}, [16]}, [17]}, [18]} in which alternating intra- and interlayer coupling act like staggered hopping in the Su-Schrieffer-Heeger (SSH) model [19]}, [20]}, [21]}, [22]}, as shown in Fig. REF .
Now there is fresh interest in RMG due to progress in fabricating and characterizing samples with a large layer number [23]}, [24]}, [25]}, [26]}, [27]}, [28]}, [29]}, [30]}, [31]} culminating in the realization of high-quality films with up to fifty layers [32]}.
